Jet-propelled boat



- June '11, 1929; J. A, wa 1,716,400

JET PROPELLED BOAT Filed July 2, 1927 2 Sheets-Sheet 2 l Illi John Q 606155.

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JET-PROPELLED BOAT.

. Application filed July 2,

,This invention relates to boats which are driven and maneuvered by jet propulsion-1 The main objects of this invention are to provide an improved form of boat having jet propulsion which is so arranged that it w ll be relatively stable in rough waters; to provide a jet propelled boat which will be raised from the water, thereby decreasing its resistance and increasing its speed at the same time that it was propelled forwardly; and to providea jet propelled boat which can be readily controlled both in a forward and rearward direction, quickly stopped and which-can be quickly maneuvered at all times.

An illustrative embodiment of this invention is shown in the accompanying drawings inwhich: I p

Figure 1 is a side elevation of the boat in its normal position in the water.

Fig. 2 is a stern end elevation of the same; Fig. 3 is a bottom plan view of the same.

Fig. 4 is a side elevation of the same when being propelled forwardly and shows how the boat is raised out of the water at the time.

of its forward propulsion. Fig. 5 is a stern end elevatlonof'the same when traveling on rough water showing how V the propelling jets of water maintain a sub stantially even keel of the boat at all times.

Heretofore in the construction of jet propelled boats, discharge jets ornozzles have i been placed along the sides, bottom and ends boat, and particularly the front end thereof,

' body of water and tend to support the boat has of the boats in various positions, but none of such constructions have had eitherof the two main objects of this invention in mind in their designing. In the present construction, the discharge nozzles or jets are arranged to slant downwardly and rearwardly so as to lift the from the water when the boat is being propelled. This lifting of the boat from the water will, of'course, decrease resistance,

thereby increasing its speed.

The other main feature ofthe present construction is that the discharge jets are confinedto the side marginal edges of the boat closely adjacent the normal water line thereof, none of the jets being located along the bottom of the boat or near its keel. Vith this arrangement of the jets when the boat is traveling over rough water, the discharged streams of water 'strike'the surface of the on an even keel at all times.

7 An illustrative embodiment of this invention is shown inthe accompanying drawings 1927., Serial No. 203,125.

which are more or less diagrammatic,'the

interior pumping mechanism not being shown or described. A boat 1 is provided alongits Y side marginal edges adjacent the normal water line with a series of downwardly and front half of the boat, so as to -lift the bow more than the stern. I j

A series of intake nozzles 3 are provided along the sides of'the boat on aplane lower than the discharge nozzles so as tobenor mally underneath the Water at all times. 7

Suitable: pumping machinery, not shown, is 7 provided within theboat for drawing the water, into intake nozzles?) and discharging it through the various discharge nozzles.

Located. on each side of the bow and inclinedv downwardly and to the front is a pair of discharge nozzles 5 whichprovide abrake for the quick stopping of-the boat whendesired.

flat fan-shaped discharge nozzle 6 which acts as a rudder for guiding the boat; This nozzle rudder 6 is mounted so as to be horizontally swingable for guiding theeboat in the a usual manner. 1 In the operation of drawn'in through the intake nozzles 3 by this b0at,the water is I The stern of the boat is 'providedwitli' a suitable pumping machinery, not shown, and, I

if it is desired to move the boat forwardly, the water is'disc'har'ged out through all of the discharge nozzles 2. This lifts the, frontend,

of the boat from the water and prop ells it forwardly at the same time. The direction of the boat canlbedetermined bythe p'ositioning of'the rudder nozzle 6 through which water is discharged either intermittently o'r continuously. I

-When it is desired to quickly stop theboat, the water is shut off from the discharge nozzles 2 and turned into the discharge nozzles 5. This acts as a quickstopping brake and at thesame time permits the front end of the in its stopping.

boat to come down into the watenthus aiding:

- r a is desired to an. boat bodily sidewise, the-:water is turned into the discharge nozzles 2 on one side of the .boat only and at g ,thesame timethrough the discharge nozzle 5 V 1 located on the same side of theboat. The 02- j zle 5 counteracts the action of the nozzles Wise. c Although but one specific V 5 this invention has been herein shown and'de scribedjit will be understood that numerous I and causes the boat to be moved bodily sideembodiment of 1 details of the construction shown may be a1- tered or omitted without dep arting from the spirit of this invention as defined by the following claims. 1

w Iclaim': I Y 1'. A'Water jet propelled b0 at having water intake means, a plurality of water discharge nozzles confined to the side marginal edges adjacent the normal water line of the boat,

and pumping means therefor. 1 1

Signed at Chicagothis 30th'day of June,

1927. c r JOHN ARTHUR ns. 

